NGK 5306 Spark Plug: Optimize Your Engine's Performance Review

Everything was going fine until I got to the last box and it was the wrong plug. 15 right 1 wrong. Now I have to plug in the old plug until I can get another one.

Used on my 1500 '03 Dodge Ram with 5.7L. brought him back to life. I've had great luck with NGK spark plugs for years. great recording and program!

Came as described but I can't give 5 stars yet because I just gave it. I will update this review in a few days! So far so good, although I had to order 16 because I have Hemi.

My car had a Delco air conditioner but when I put NGK in my engine I noticed I had more power. I will definitely put it on my other cars. slightly more expensive than ACDelco, but more powerful

I have always used them on my 04 Dodge Ram 1500 and they have always worked great for me. Remember guys, the rule of thumb is you lose 0.001 inch of clearance every 2000 miles. Replace it when needed and you won't regret it!

My mechanic had no problem connecting them. They came ready to install with the correct clearance the truck said they should have. I immediately noticed the difference. My gas mileage went from 12.5 on the highway to 17.5-18 mpg. And from 9.9 mph to 12 mpg in the city. My Ram took 16 of these spark plugs.